JP3700699B2 - Data copying device for film with lens and film with lens - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a data imprinting device that is mounted on a film with a lens and imprints data such as the date and time of photographing on a photographic film. More particularly, the present invention relates to a data copying device for a lens-equipped film that uses external light as a light source for data copying.
[0002]
[Prior art]
As a photographic film, a disposable lens-equipped film that is built in a case with a lens and can be photographed as it is is known. As this film with a lens, there is also known a type having a data copying device for copying data such as a photographic date and time to a predetermined area of the photographic film.
[0003]
This lens data transfer device for lenses has an external light entrance that is opened in front of the lens film case without using a dedicated light source for data transfer so that it can be manufactured in a compact, compact and inexpensive manner. A type of using external light introduced from the above as a light source for data copying is known. The external light introduced from the external light entrance is irradiated to a liquid crystal panel that forms a data pattern for imprinting as a translucent part, and the data pattern is formed in a predetermined area of the photographic film by the external light transmitted through the liquid crystal panel. Imprinted.
[0004]
[Problems to be solved by the invention]
Here, when the outside light is used as it is, a sufficient amount of light cannot be obtained as a data copying light source, and the exposure amount for copying the data pattern is insufficient, so that a clear data pattern is copied onto the photographic film. There is a risk that it will not be possible. Of course, the exposure time for data imprinting may be longer than the exposure time for photography, but in this way, the outer light entrance can be opened and closed at a different timing from the photography shutter. Since a shutter function is required, it is unsuitable for a film with a lens that needs to be manufactured in a small, compact and inexpensive manner. In order to avoid this adverse effect, it is desirable to attach a condensing lens to the external light entrance to condense external light onto the liquid crystal panel. A data copying apparatus using a condensing lens as a condensing element for condensing external light has been proposed by the present applicant in Japanese Patent Application Laid-Open Nos. 8-114484 and 8-105314.
[0005]
However, when a condensing lens is used as a condensing element for condensing external light, there are the following problems to be solved. First, the condenser lens cannot efficiently collect external light components other than parallel light such as scattered light. In addition, external light, that is, sunlight is white light, and when this is used as a light source for data copying, a data pattern is copied in a white color on a photographic film. There is a problem that a data pattern that is overlapped with a captured image and imprinted with a white color has poor visibility and is difficult to read.
[0006]
An object of the present invention is to propose a data imprinting device for a lens-equipped film provided with a condensing element capable of efficiently collecting external light.
[0007]
Another object of the present invention is to propose a data imprinting device for a lens-equipped film provided with a condensing element capable of imprinting a data pattern with a highly visible color.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, a data copying device for a film with a lens according to the present invention includes a liquid crystal panel for data copying that forms a data pattern for copying as a translucent portion, and illumination light that illuminates the liquid crystal panel. And a condensing element formed by collecting external light, and the data condensing device for film with lens for imprinting a data pattern on a predetermined area of the photographic film incorporated in the film with lens. The element has a light receiving portion whose surface is an external light receiving surface, a light emitting surface that protrudes from the back surface of the light receiving portion, and the light emitting surface is a light incident side surface of the liquid crystal panel. A light-concentrating portion facing the light-receiving portion, and the light-concentrating plate receives light emitted from the strobe unit mounted on the lens-equipped film. It is characterized in that it comprises a flash light receiving portion.
[0009]
By adopting this configuration, strobe light emitted when the exposure amount is insufficient can be condensed as a light source for data copying, so that a clear data pattern can always be copied.
[0010]
In addition to the above-described configuration, the light collector preferably has a configuration that includes an edge portion that is visible through a viewfinder provided in the lens-equipped film. In this way, it is possible to determine whether or not strobe light emission is necessary for taking a photograph by visually observing the light emission state of the edge portion at the time of taking a photograph.
[0011]
Instead of forming the strobe light receiving part on the light collecting plate itself, a part of the strobe light emission may be collected on the light collecting plate side using a light guide member such as an optical fiber.
[0012]
Moreover, you may use the condensing plate which consists of translucent resin in which the fluorescent material was disperse | distributed as said condensing element. If it does in this way, the external light irradiated to the surface of the light-condensing plate will enter the inside and will be absorbed by the fluorescent material, and the fluorescent material will emit fluorescence having a longer wavelength than the incident light. Many light components of the emitted fluorescence propagate through the inside of the light collecting plate while being reflected by the interface with air, and are condensed on the light emitting surface which is the end face thereof and emitted from the light emitting surface. Therefore, unlike a condensing lens, external light components other than parallel light components such as scattered light can be efficiently collected, so that a sufficient amount of external light can be collected as a light source for data copying, and the light is clear. Data patterns can be imprinted on photographic film.
[0013]
In addition, fluorescent materials such as fluorescent dyes and fluorescent pigments that emit fluorescence of each color can be used, and the color of the light source for data copying is the fluorescent color of the fluorescent material to be used. In addition, a highly visible data pattern can be copied.
[0014]
Here, in order to increase the amount of external light collected by the light collecting plate, the shape of the light receiving portion of the light collecting plate may be a rectangle that is long in the height direction of the data pattern imprinted on the photographic film.
[0015]
Further, in order to efficiently propagate the external light received by the light receiving portion to the light emitting surface side, a predetermined surface facing the back surface is formed on the surface of the light receiving portion where the light emitting portion is formed. It is desirable to form a deep V-groove.
[0016]
Instead of forming the V-groove in this way, the light emitting portion is formed so as to be bent at a substantially right angle from the end of the light receiving portion to the back surface side, and the bent portion with respect to the external light receiving surface is formed. You may employ | adopt the structure which formed the inclined surface inclined at an angle of less than 90 degree | times. In this way, the light propagating through the light receiving portion is reflected toward the light emitting portion by the inclined surface, so that the light emission efficiency of the light emitting surface can be increased.
[0017]
Furthermore, the light receiving portion may be formed in a flat plate shape, but may be formed in a curved plate shape instead.
[0018]
Next, in order to reduce the amount of light emitted from the end surface other than the light emitting surface of the light collector, increase the amount of light emitted from the light emitting surface, and efficiently collect external light, the light emitted from the light collector is used. It is effective that the surface is roughened by squeezing or the like, and the surface other than the light emitting surface is mirror finished.
[0019]
In addition, if the surface of the light collector is brought into close contact with the lens-attached film side to which the light collector is attached, fluorescent light propagating through the contact portion leaks to the outside, realizing an efficient light condensing operation. Can not. In order to avoid this harmful effect and to propagate the fluorescence efficiently toward the light emitting surface inside the light collector, the film with lens is substantially in a point contact or line contact state. It is desirable to attach to the side.
[0020]
Moreover, the film with a lens of this invention can be comprised including the above-mentioned data imprinting device for films with a lens.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a data copying device for a film with a lens to which the present invention is applied will be described with reference to the drawings.
[0022]
First, the overall configuration of a lens-equipped film on which a data copying apparatus to which the present invention is applied will be described with reference to FIG. As shown in this figure, the lens-equipped film 1 includes a film case 2, and a photographing lens 3 is attached to the front surface 2 a of the film case 2, and the photographing light 4 passes through the photographing lens 3. An image can be formed on the photographic film 5 arranged at a predetermined position inside. A shutter 6 is disposed between the photographing lens 3 and the photographic film 5. When the release 7 disposed on the upper surface of the film case 2 is pressed, the shutter 6 is opened and the photographing light 4 is imprinted on the photographic film 5. The lens-equipped film 1 of this example includes a strobe unit 8 and a strobe battery 8a, and can drive the strobe unit 8 to emit strobe light when the amount of exposure is insufficient during photography.
[0023]
The data copying device 10 mounted on the lens-equipped film 1 having this configuration includes a light collecting plate 11 for collecting external light attached to the front surface 2a of the film case 2, and external light condensed by the light collecting plate 11. It has a liquid crystal panel 12 to be irradiated, an IC chip 13 on which a drive control circuit for the liquid crystal panel 12 is mounted, and a driving battery 14. The liquid crystal panel 12 forms a data pattern for imprinting as a translucent part, and the external light transmitted through the translucent part passes through an imaging lens 15 disposed between the shutter 6 and the photographic film 5. The light is condensed on the data imprinting area 5 a of the photographic film 5. When shooting is not performed, the shutter 6 blocks the exit side of the liquid crystal panel 12 from the imaging lens 15, and an optical path between them is formed only when taking a picture, so that data can be copied. It becomes.
[0024]
FIG. 2A is a front view of the lens-equipped film 1 of this example as viewed from the front surface 2a side, and FIG. 2B is a side view thereof. As can be seen from these figures, the photographing lens 3 is disposed at the approximate center of the front surface 2a of the film case 2 of the lens-equipped film 1, and the light collecting plate 11 of the data copying device 10 is adjacent to the photographing lens 3. Is arranged. A finder 9 is attached above the photographing lens 3 and the light collector 11, and a strobe light emitting surface 8 b of the strobe unit 8 is located on the side of the finder 9.
[0025]
The light collector 11 is a molded product made of a transparent resin such as an acrylic resin or a polycarbonate resin in which a fluorescent substance such as a fluorescent pigment or a fluorescent dye is dispersed. Here, the concentration of the pigment or dye may be in the range of 0.02 to 0.12% by weight. Also, the pigments and dyes to be dispersed are not limited to a single type but may be a plurality of types. For example, two kinds of dyes are dispersed, one dye concentration is within the range of 0.02 to 0.12%, and a small amount of a dye having a peak wavelength higher than one dye (0.001) as the other dye. % Or less) may be mixed. When such a dye is mixed, it becomes easy to recognize the data in which the light emission wavelength range of the light collector 11 is expanded.
[0026]
Further, it is desirable to set the peak wavelength of the light emission wavelength of the light collector 11 to be in the range of 560 to 650 nm, particularly in the range of 570 to 600 nm.
[0027]
3A is a partial cross-sectional view of a portion cut along line 3A-3A in FIG. 2A, and FIG. 3B is a front view of the light collector 11 viewed from the front side of the film case 2. FIG. It is. First, the overall shape of the light collector 11 will be described with reference to FIGS. 2 and 3.
[0028]
The light collector 11 includes a flat plate-shaped light receiving portion 21 that is rectangular in the vertical direction of the film case 2, and the surface (front surface) 21 a of the light receiving portion 21 is a light receiving surface for receiving external light. A flat light emitting portion 22 is formed from a middle position in the vertical direction of the back surface 21b of the light receiving portion 21 toward a direction orthogonal to the back surface. The front end surface 22a of the light emitting portion 22 is a light emitting surface, and fluorescence corresponding to external light collected from the light emitting surface 22a is emitted.
[0029]
Thus, the light receiving portion 21 of the light collector 11 has a shape that is long in the vertical direction of the film case 2. In other words, it has a long shape along the height direction of the imprinting data pattern formed as a translucent portion by the liquid crystal panel 12. When the light receiving portion 21 is vertically long, when the area of the light receiving portion 21 is the same, compared to the case where a long light receiving portion is formed in the horizontal direction of the film case 2, that is, in the width direction of the imprinting data pattern, Condensing efficiency of external light with respect to the light emitting portion 22 can be increased.
[0030]
The light collector 11 of this example includes the following portions in addition to the light receiving portion 21 and the light emitting portion 22 described above. That is, the upper end of the light receiving portion 21 is provided with a flat bent portion 23 bent at a right angle toward the film case 2, and a portion immediately below the finder 9 at the tip of the bent portion 23 is bent at a right angle upward. Extending upwards. An edge 24 a on the upper end side of the flat extension portion 24 is located in the field of view of the finder 9. Further, the bent portion 23 extends horizontally toward the strobe light emitting surface 8b, and a portion immediately below the strobe light emitting surface 8b bends at a right angle upward with substantially the same width as the strobe light emitting surface 8b. A flat strobe light receiving portion 25 having a size covering a part of the light emitting surface 8b is formed.
[0031]
As described above, the light collector 11 of the present example includes the edge 24 a protruding in the field of view of the finder 9. Since the edge 24a also functions as a light emitting portion of the light collector 11, the brightness of external light can be confirmed based on the light emission state of the edge 24a. That is, when the amount of light emitted from this portion is small, the amount of external light is small, and accordingly, strobe light emission is necessary in photography. On the other hand, when the amount of light emission in this portion is large, the amount of external light is large, and therefore, underexposure does not occur even in photography, and strobe light emission is unnecessary.
[0032]
Further, since the light collector 11 of this example includes a strobe light receiving portion 25 that covers the strobe light emitting surface 8b, it can be condensed by the light collector 11 during strobe light emission. As a result, strobe light emission can be used together with outside light as a data copying light source, so that a clear data copying operation can be performed even when the amount of outside light is insufficient.
[0033]
Next, the detailed shape of the light collector 11 will be described mainly with reference to FIG. In the light collector 11 of this example, a V-groove 26 formed at a predetermined depth toward the back surface is formed at a position on the front surface side of the light emitting portion 21 where the light receiving portion 22 is formed. The inclined surfaces 26a on both sides of the V-groove 26 are surfaces inclined by approximately 45 degrees with respect to the surface 21a of the light receiving part 21, and the fluorescence propagating inside the light receiving part 21 is perpendicular to the interface inclined by 45 degrees. Since the light is reflected and travels toward the light emitting portion 22, the light emission efficiency of the light emitting surface 22a can be increased.
[0034]
Here, in the light collecting plate 11 of this example, in addition to the above-described configuration, the light emitting surface 22a is roughened by squeezing or the like, and the other light collecting plate surface, particularly the end surface other than the light emitting surface 22a, is mirror finished. . If it does in this way, the ratio which the light which propagates the inside of the light-condensing plate 11 radiate | emits from end surfaces other than the light emission surface 22a can be suppressed, and the luminous efficiency of the light emission surface 22a can be improved.
[0035]
Next, the attachment structure to the film case 2 of the light-condensing plate 11 of this example is demonstrated. As shown in FIGS. 2 and 3, the front surface 2a of the film case 2 is formed with a mounting portion 2c of the data copying device 10 protruding in a rectangular shape. A light-condensing plate mounting surface 2d is formed in such a size that the light receiving portion 21 is exactly fitted. Further, the upper surface of the protruding portion 2 c is a support surface 2 e that supports the bent portion 23 of the light collector 11. A through hole 2f for mounting the light emitting portion 22 of the light collector 11 is formed in the light collector mounting surface 2d, and the liquid crystal panel 12 of the data copying apparatus 10 is disposed inside the through hole 2f. ing.
[0036]
Here, a plurality of protrusions or protrusions 2g are formed at predetermined intervals on the light collector mounting surface 2d and the support surface 2e. The light collecting plate 11 is fixed to the attachment surface 2d and the support surface 2e in a state of point contact or line contact by these protrusions or protrusions 2g. Thus, since the light collector 11 is not attached in close contact with the film case 2, light propagating through the light collector 11 can be prevented from leaking outside through the contact portion. Therefore, the light emission efficiency of the light emitting surface 22a can be increased.
[0037]
(Modification of light collector)
FIG. 4 shows another example of the light collector 11. The light collector 30 shown in this figure has a shape including only a light receiving portion 31 whose front surface 31 a is a light receiving surface for external light and a light emitting portion 32 protruding from the back surface 31 b of the light receiving portion 31. However, unlike the condensing portion 11 described above, the light receiving portion 31 is not a flat plate shape but a curved plate shape curved forward. The light emitting portion 32 has a flat plate shape, and the tip surface thereof is a light emitting surface 32a. Note that a V-groove 36 is formed in the light receiving portion 31 so as to direct light propagating inside efficiently toward the light emitting portion 32. The outer peripheral end surface 31c of the light receiving portion 31 of the concentrating plate 30 having this shape is supported in a line contact state by a ridge frame 41 formed on the film case 2 side.
[0038]
Since the configuration other than this is the same as that of the lens-fitted film 1 described above, the same reference numerals are given to corresponding portions in FIG.
[0039]
Thus, when the light receiving portion 31 is formed in a curved plate shape, there is an advantage that a light receiving area of outside light can be increased compared to a flat plate-shaped light receiving portion. Also in the light collector 30 of this example, if the light emitting surface 32a is roughened and the other outer peripheral end surface 31c is mirror finished, the light emission efficiency of the light emitting surface 32a is suppressed by suppressing light emission from the outer peripheral end surface 31c. Can be increased.
[0040]
FIG. 5 shows still another example of the light collector 11. The basic structure of the light collector 40 shown in this figure is the same as that of the light collector 11. The difference is that the lower end of the flat light-receiving part 41 whose surface is the external light condensing surface 41a is bent at a substantially right angle toward the back side to form a light-emitting part 42 protruding to the back side of the light-receiving part 41. This is the point. The angle of the bent part extending from the light receiving part 41 to the light emitting part 42 is an inclined surface 42b cut at an angle of approximately 45 degrees.
[0041]
In the light collector 40 having this configuration, the fluorescence generated by the light collected on the surface 41a of the light receiving portion 21 propagates through the light receiving portion 41, and the inner side surface of the inclined surface 42b inclined at 45 degrees ( Reflected at a right angle at the interface) toward the light emitting portion 42. Therefore, the light emission efficiency of the light emitting surface 42a at the tip of the light emitting portion can be increased. Here, in the light collector 40 of this example, the inclined surface 42b can be made wider than in the case where the V-groove is formed as in the light collector 11. In other words, since the reflection surface of the fluorescence propagating through the inside can be widened, the light collection efficiency of the fluorescence propagating through the inside is improved.
[0042]
(Other embodiments)
In each of the above examples, the light collector is attached to the film case, but the front surface portion or the whole of the film case may be used as the light collector.
[0043]
Further, in the above-described light collecting plates 11 and 40, a portion extending to the strobe light emitting surface is formed integrally with the light collecting plate so as to collect a part of the strobe light emission. However, instead of forming a portion for collecting the stroboscopic light emission on the condensing plate itself, a part of the stroboscopic light emission may be guided to the condensing plate by arranging a light guide member separately.
[0044]
For example, as shown in FIGS. 6A and 6B, the light collecting plate 50 includes a light receiving portion 51, a light emitting portion 52, and a strobe light emission introducing portion 53 bent at a right angle from the upper end of the light receiving portion to the back surface side. It is possible to adopt a configuration in which one end 60a of the light guide member 60 made of an optical fiber is opposed to the distal end surface 53a of the strobe light emission introduction portion 53 and the other end 60b is disposed on the strobe light emission side. Even in this case, it is possible to secure the light quantity of the data imprinting light source by utilizing a part of the strobe light emission.
[0045]
Here, as an arrangement form of the light guide member 60, as shown in FIGS. 7A and 7B, an end portion 60 c on the light collector plate side of the light guide member 60 made of an optical fiber is used as the back surface of the light collector plate 50. It is also possible to adopt a configuration in which a predetermined length is arranged along In this case, divergent light from the optical fiber is collected from the back surface of the light receiving portion 51.
[0046]
【The invention's effect】
As described above, in the data copying device for a film with a lens according to the present invention, the light condensing element for condensing the external light used as the data copying light source is a light receiving surface whose surface is an external light receiving surface. And a light-emitting portion that protrudes from the back surface of the light-receiving portion and has a light-emitting surface that faces the light-incident side of the liquid crystal panel. The light collector includes a strobe light receiving unit that receives light emitted by the strobe unit provided in the lens-equipped film. As a result, the strobe light emitted when the exposure amount is insufficient can be condensed as a light source for data copying, and a clear data pattern can always be copied. The same effect can be obtained even when a light guide member such as an optical fiber is separately arranged to collect the strobe light emission.
Further, in the light collector of the present invention, in addition to the above configuration, since it can be configured to have an edge portion visible through a finder equipped on a lens-equipped film, By visually observing the light emission state of the edge portion, it is possible to determine whether or not strobe light emission is necessary for taking a picture.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a lens-equipped film to which the present invention is applied.
2A is a front view of a lens-equipped film, and FIG. 2B is a side view thereof.
3A is a partial cross-sectional view of a portion cut along line 3A-3A in FIG. 2A, and FIG. 3B is a front view of a light receiving portion of a light collector.
4A is a front view of a lens-equipped film provided with a condensing plate having a different shape, and FIG. 4B is a partial cross-sectional view taken along line 4B-4B.
5A and 5B are views showing a modification of the light collector shown in FIG. 3, in which FIG. 5A is a partial cross-sectional view in a state where it is attached to a lens-attached film, and FIG.
FIG. 6A is a front view of a lens-equipped film provided with a light guide member for condensing stroboscopic light emission, and FIG. 6B is an explanatory diagram showing an arrangement relationship between the light collector and the light guide member.
FIG. 7A is a front view of a lens-equipped film provided with a light guide member for condensing stroboscopic light emission, and FIG. 7B is an explanatory diagram showing an arrangement relationship between the light collector and the light guide member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Film with lens 2 Film case 2a Case front surface 2b Case upper surface 2c Projection part 2d for attaching a light collector 2d Mounting surface 2e Support surface 2f Through hole 2g Projection 5 Photo film 6 Shutter 8 Strobe unit 8b Strobe light emitting surface 9 Viewfinder 10 Data Copying device 11 Light collecting plate 21 Light receiving portion 21a Light receiving portion surface 21b Light receiving portion back surface 22 Light emitting portion 22a Light emitting surface 23 Bent portion 24 Extension portion 24a Edge 25 protruding to viewfinder Strobe light receiving portion 26 V groove 30 Light collecting plate 31 Light receiving Portion 32 Light-emitting portion 32a Light-emitting surface 40 Light-collecting plate 41 Light-receiving portion 42 Light-emitting portion 42b Inclined surface 50 Light-collecting plate 51 Light-receiving portion 52 Light-emitting portion 53a Light-receiving end surface 60 Light-guiding member 60a Light-collecting plate-side end surface 60b Strobe unit Side end face 60c End portion disposed along the rear surface of the optical plate

Claims (9)

A data imprinting liquid crystal panel for forming a imprinting data pattern as a translucent portion; and
A light collecting element that forms illumination light for illuminating the liquid crystal panel by collecting external light;
In a data imprinting device for a lens-equipped film that imprints a data pattern on a predetermined area of a photographic film incorporated in the lens-equipped film,
The condensing element has a light receiving portion whose surface is an external light receiving surface, a light emitting surface that protrudes from the back surface of the light receiving portion, and the light emitting surface is a light incident surface of the liquid crystal panel. A light-emitting portion facing the side surface, and a light collector with
The data collector for lens-equipped film, wherein the light collecting plate includes a strobe light receiving unit that receives light emitted from a strobe unit equipped on the lens-equipped film. In claim 1,
The data collector for lens-equipped film, wherein the light collector has an edge portion that can be seen through a finder equipped on the lens-equipped film. In claim 1 or 2,
A data copying device for a film with a lens, comprising a light guide member for guiding a part of light emitted by the strobe unit to the light collector. In any one of Claims 1 thru | or 3,
A data imprinting device for a film with a lens, wherein a V-groove having a predetermined depth is formed on the front surface of the light receiving portion where the light emitting portion is formed. In any one of Claims 1 thru | or 3,
The light emitting portion is formed in a state of being bent at a substantially right angle from the end of the light receiving portion to the back surface side, and an inclined surface inclined at an angle of less than 90 degrees with respect to the external light receiving surface is formed in the bent portion. A data imprinting device for a film with a lens, which is formed. In any of claims 1 to 5,
A data copying device for a film with a lens, wherein the light receiving portion has a curved plate shape. In any one of Claims 1 thru | or 6.
A data copying device for a film with a lens, wherein a light emitting surface of the light collector is a rough surface, and a surface other than the light emitting surface is mirror-finished. In any one of Claims 1 thru | or 7,
A data copying device for a film with a lens, wherein the light collector is attached to the side of the film with a lens substantially in a point contact or line contact state. A film with a lens, comprising the data copying device for a film with a lens according to any one of claims 1 to 8.

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